Duplex way station selector



J. ELICH ETAL DUPLEX WAY STATION SELECTOR March 19, 1968 v2C) Sheets-Sheet 1 Fled March 30, 1964 ATTORNEY March 19, 1968 J. ELICH ETAL 3,374,309

DUPLEX WAY STATION SELECTOR Filed March 30, 1964 20 Sheets-Sheet 2 March 19, 1968 J. ELlcH ETAL 3,374,309 l DUPLEX WAY STATION SELECTOR ATTORNEY March 19, 1968 J. ELlcH ETAL DUPLEX WAY STATION SELECTOR 2O Sheets-Sheet 4 Filed March 30, 1964 xNvENToRs JoHN ELIC VINCENT C.KEMPF ATTORNEY March 19, 1968 J. r-:Llci-l ETAL 3,374,309

DUPLEX WAY STATION SELECTO'R Filed March 30, 1964 2O Sheets-Sheet 5 VINCENT C. KEMPF GMA.. ATTORNEY March 19, 1968 J. EUCH ETAL DUPLEX WAY STATION SELECTOR 20 Sheets-Sheet e:

Filed March 50, 1964 INVENTORS JOHN ELlcH BY VINCENT C. KEMPF l. (5ML ATTORNEY March 19, 1968 J. ELlcH ETAI. 3,374,309

DUPLEX WAY STATION SELECTOR Filed March 30, 1964 2O Sheets-Sheet V INVETORS JOHN ELlcH ATTORNEY VINCENT C. KEMPF U0, f5. (5M

@im MLM March 19, 1968 J. EUCH ETAL DUPLEX WAY STATION SELECTOR 20 Sheets-Sheet 8 Filed March 50, 1964 March 19, 1968 4. ELlcH ETAL. 3,374,309

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DUPLEX WAY STATION SELECTOR 20 Sheets-Sheet 12 Filed March 50, 1964 INVENTORS HE v CK. ,m UC o ETAw W m .A me@ ON .JW

March 19, 1968 J. ELICH ETAL DUPLEX WAY STATION SELECTOR 2O Sheets-Sheet 1:5

Filed March 3Q, 1964' J. ELICH ETAL 20 Sheets-Sheet 14 DUPLEX WAY STATION SELECTOR March 19, 1968 Filed March 30, 1964 ATTORNEY Fnom sENomG Encooen (Flc. n4)

March 19, 1968 .L ELICH ETAL DUPLEX WAY STATION SELECTOR lled March 30, 1964 2O Sheets-Sheet 15 wn-m NTON! m. ..O-m

TO CODING INPUTS OF SD (FIG- 2) mooozm @252mm March 19, 1968 J. EUCH ETAL DUPLEX WAY STAT ION SELECTOR 2O Sheets-Sheet J6 Filed March 30, 1964 Marc-II 19, 1968 Filed March 30, 1964 J. ELIcI-I ETAI. 3,374,309

DUPLEX WAY STATION SELECTOR 2O Sheets-Sheet I7 ATTORNEY March 19, 1968 `J. ELlcH ETAL DUPLEX WAY STATION SELECTOR 20 Sheets-Sheet 18l Filed March 30, 1964 Imm! March 19, 1968 J. ELICH ETAL DUPLEX WAY STATION SELECTOR 20 Sheets-Sheet .19

Filed March 30, 1964 fbfbwh ATTORNEY March 19, 1968 J. EUCH ETAL DUPLEX WAY STATION SELECTOR 2O Sheets-Sheet 2O Filed March 30, 1964 JOmS m NTI INVENTORS JOHN EUCH VINCENT C.KEMPF BY -o ATTORNEY 

1. IN A TELEGRAPH SYSTEM, IN COMBINATION: (A) A CENTRAL STATION; (B) A PLURALITY OF WAY STATIONS; (C) A LINE CIRCUIT ARRANGED FOR DUPLEX OPERATION INTERCONNECTING THE CENTRAL STATION AND THE WAY STATIONS; (D) A MESSAGE RECORDER AT EACH WAY STATION; (E) A RECORDER CONTROL MEANS AT SAID RECORDER FOR BLINDING AND UNBLINDING SAID RECORDER TO MESSAGE AND CONTROL SIGNALS; (F) A RECEIVING DISTRIBUTOR CONNECTED TO SAID LINE CIRCUIT FOR RECEIVING SIGNALS FROM THE CENTRAL STATION; (G) READING MEANS CONNECTED TO SAID RECEIVING DISTRIBUTOR FOR READING A SEQUENCE OF WAY STATION SELECTION CHARACTERS SENT FROM THE CENTRAL STATION; (H) A RECEIVING COUNTER CAPABLE OF ASSUMING A PREDETERMINED NUMBER OF COUNTING STATES; (I) SIGNAL TRANSMISSION MEANS AT EACH WAY STATION CONNECTED TO SAID LINE CIRCUIT FOR TRANSMITTING ANSWERBACK SIGNALS TO THE CENTRAL STATION; AND (J) CIRCUIT MEANS INTERCONNECTING SAID RECEIVING COUNTER WITH SAID RECEIVING DISTRIBUTOR, WITH SAID READING MEANS, AND WITH SAID SIGNAL TRANSMISSION MEANS, WHEREBY CONTROL SIGNALS ARE RECEIVED BY SAID RECEIVING DISTRIBUTOR, MESSAGES ARE RECORDED BY SAID RECORDER AND ANSWER-BACK SIGNALS ARE SENT BY SAID SIGNAL TRANSMISSION MEANS, ONLY DURING COUNTING STATES OF SAID RECEIVING COUNTER IN A RECEIVING PROGRAM DETERMINED AND CONTROLLED BY SAID COUNTER. 